Window-sash lock.



PATENTED MAR. 5. 1907.

M. H. GABA. WINDOW SASH LOOK.

APPLICATION FILED JULY 25, 1906 2 SHEETS-SHEET l.

PATENTED MAR. 5. 1907.

M. H. GABA. v I WIN-DOWSASH LOOK.

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UNITE STATES FATE T OFFIQE.

WlNDOW-SASH LOCK.

Specification of Letters Patent.

'ratenteu Maren 5, 1907.

Application filed July 25, 1906. Serial No. 327,604.

To (tZZ whom it nearly concern:

Be it known that I, MELVIN H. GABA, a

citizen of the United States, residing at Dayton, in the county ofMontgomery and State of Ohio, have invented certain new and usefulImprovements in Window-Sash Locks; and I do declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in window-sashlocks, and possesses the new and useful structural features set forth inthe accompanying drawings and described in the annexed specification andclaims.

Among the essential features of the invention are a slidable framecarrying a block with a toothed face, with means for simultaneouslymoving said frame and block downwardly and outwardly in lowering thewindow-sash.

Sheet 1 of the drawings illustrates my improvements as applicable to arailwaycar window. Sheet 2 illustrates the same as ap plicable to ahouse-window, the modification being slight in either case.

Figure 1 is an inner front view of the corner of a railwaycar Window,showing my improved sash-lock in position, the sash being in its lowestposition and locked. Fig. 2 is a view similar to Fig. 1, with thelock-casing in section to disclose the lock devices. Fig. 3 is asectional view on the line V V of Fig. 2. Fig. 4 is a sectional view onthe line I I of Fig. 2. Fig. 5 is a front elevation of one side of awindow, partly in section and showing my improvements applied to ahouse-window. Fig. 6 is a sectional view on the line Y Y of Fig. 7. Fig.7 is a sectional view on the line X X of Fig. 5. .Fig. 8 is a detachedperspective view of the toothed block-supporting frame of the lockdevices shown in Fig. 2. Fig. 9 is a similar view of the toothedblock-supporting frame slightly modified as shown in Fig. 5. Fig. 10 isa detached bottom plan view of the lock-casing as shown in Fig. 2. 11 isa detail sectional view on the line a a of Fig. 2.

In a detaildescription of the invention similar reference charactersindicate corresponding parts.

Referring to the drawings on Sheet 1, these illustrate, as beforestated, my improved sash lock or fastener applied to a car-window, 3indicating the window-frame, 2 the window-sill, and 1 the window-sash.Mortised in the inner side of strip 4, which is secured to the frame 3,is a toothed bar 7, which is secured in place by screws penetrating theextreme ends of said bar.

Secured to the inner side of the sash 1, adjacent to one of the lowercorners of said sash, is an inclined metallic bar 8, the extreme ends ofwhich are secured to the sash by screws 8. This inclined bar 8 is placedin a suitable recess in the sash, (see Fig. 4,) and between said inclinebar 8 and the toothed bar 7 on the window-frame strip 4 there is atoothed block bar 5, one side of which is tapered, as at 5, to match theinclination of the bar 8, and the other side of which is provided withratchet-teeth 5", Which engage the teeth of the bar 7. The contact ofthe bar 8 and the block 5 is such as to maintain a proper engagementbetween the teeth when the sash 1 is raised. The shape of the teeth onthese parts is such as to allow the window-sash to be elevated withoutany interference from the teeth and to pre ent the window-sash frombeing lowered unless a disengagement of said teeth is first effected.

The triangular bar 5 is carried on an arm 17, which projects from aframe 15, having an upright extension 14, terminating in a head 14, thewhole being otherwise termed a sliding frame. This frame is inclosedwithin the lock-casing 6, which is secured to the inner side of thewindow-sash 1 near one corner thereof, said lock-casing having asuitable opening to permit of the arm 17 extending therethrough tosupport the toothed block 5. Projecting from the bottom of said frameare two guide-pins 16 and 16, which pass through openings in the bottomof the lock-casing 6. The opening 16, through which the guide-pin 16passes, is essentially oblong to permit of some lateral movement of thepin 16 for a purpose hereinafter specified. On the interior of thelock-casing there is a two-arm spring 13, one arm of which engages theundcr side, of the head 14 of the sliding frame 15 and holds said frame,to gether with the toothed block 5, in an upper position, as shown inFig. 2. This is the normal position of the frame and toothed block 5.

1O designates a cam-latch, which is pivoted IIO within the lock-casing 6at 11 and is nor mally held in an upper position by one arm of thespring 13 engaging a pin 11 on a side of said cam-latch, as shown inFig. 2.

Projecting from an end of the cam-latch 10 is a bolt 12, which passesthrough a suitable opening in the lock-casing and normally lies below astop 18, which is on the windowframe strip 4 at a suitable point nearthe lower end of said window-frame, as shown in Fig. 1. The bolt 12 andstop 18 provide a lock to secure the window-sash in its lower position,so that it cannot be raised from the outside of the window. The innerend of the cam-latch 10 has a finger-piece 21, which projects through asuitable opening in the casing 6 and is pressed downwardly by thefingers to remove the bolt 12 in raising the window-sash. In thuspressing downwardly the inner end of the latch 10 the fingers engage astationary projection 22, extending from the lock-casing. The lower sideof the latch 10 has a cam-surface 23, which engages the horizontalportion of the frame 15 and lowers the ratchet-bar 5, together with theframe, when the latch is pressed downwardly. The bolt 12 and thesupporting-frame 15 are thus simultaneously moved when said latch 10 ispressed downwardly by the fingers. In this movement of the cam-latch 10the bolt 12 is moved out of the path of the locking projection 18, andthe toothed block 5 is lowered on the incline 8 to free the teeth 5 fromthe stationary toothed bar 7 and to permit the sash to be raised. Afterthis the camlatch 10 is released and the toothed block 5 moves up theincline 8 to rengage the toothed bar 7, and the sash is held in itsraised position by said teeth being maintained in such position by theincline 8.

It will be understood that the lengths of the toothed block 5 and thebar 7, also the inclined bar 8, are sufficient to permit the window-sash to be raised and held at the desired height. In pressing downupon the latch 10 to separate the toothed block 5 and toothed bar 7 itwill be understood that the block 5 must have sufficient downward andoutward movement to allow it to disengage the bar 7. This movement ofthe block 5 from the toothed block 7 at the same time that the saidblock 5 is moved downwardly is accomplished by the cam-surface 23 of thelatch 10 and a corresponding tapered surface of the frame 15, which isengaged by the latch. ,These are illustrated in Fig. 11, where it willbe understood that owing to the surfaces of these parts the frame 1 5,carrying the ratchetblock 5, will have some outward movement during thedepression of said frame. This renders necessary the elongated opening16, hereinbefore referred to, in the bottom of the lock-casing 6 (shownin Fig. 10) in order that the pin 16 may have suflicient lateralmovement. The guide-pin 16 acts as a pivot for this movement of theframe 15 and block 5. The extent of such movement is sufficient todisengage the ratchets.

It Will be understood that the incline 8 permits the block 5 to moveaway from the bar 7 because at the same time the block 5 is movingdownwardly. lhe construction of the lock devices shown in Fig. 5 for thepurposes of a house-window is attended with the following modifications:'l'he bolt 12 is on the end of a pin 9, which works through suitableopenings in the casing 6 and has a portion of its body surrounded by ahelical spring 9 to press it outwardly. The middle portion of said bolthas a rigid collar 24, which is engaged by a nose 25 of the latch 10 todraw back said bolt. The latch 10 in all other respects is substantiallythe same as that shown in Fig. 2. The bolt 12 may enter any of a seriesof holes 26 in the windowframe 3. These holes take the place of the stop18 in the other modification. (Shown in Fig. 1.) In this constructionthe lock-casin 6 is mortised in the window-sash, so that al portions ofthe device are concealed from view with the exception of the projectingend 21 of the latch 10. In depressing the latch 10 the nose 25 thereofdraws the bolt 12 outwardly against the tension of the spring 9" byengaging the collar 24. Also in this modified construction the inclinebar 8 is mortised in the window-sash and is attached to a plate 27 whichis screwed to the window-sash. This plate 27 has an opening 26 for thebolt 12 and in which the bolt enters in looking the Window-sash in itslowered position.

I claim 1. In a window-sash look, a frame sup porting a toothed blockcarried upon the window-sash, a stationary inclined bar inclosing saidtoothed block, a stationary toothed barv with which the toothed block ismade to engage by the inclined bar when the sash is moved upwardly, anda cam-latch engaging said frame to move the toothed block downwardly andlaterally simultaneously to effect a disengagement between said toothedblock and said toothed bar in lowering the window-sash.

2. In a window-sash look, a slidable frame carrying a wedge-shapetoothed block, and guide-pins projected from said frame, a latchengaging said frame to move it downwardly, means for maintaining theframe and toothed block in their upper positions when released by thelatch, a bolt projecting from said latch, an inclined bar upon thewindow-sash engaging the smooth surface of the toothed block, a toothedbar on the window-frame engaging the toothed block, and means on thewindow-frame to interlock with the bolt on the latch.

3. In awindow-sash look, aslidable frame, block when said block is movedupwardly lo a block supported thereon having teeth on against theinclined bar. one side and a smooth surface on the other, a In testimonywhereof I afiiX my signature gamiiageh adapged to 511love salid frameand in presence of two witnesses.

oo ownwar y an atera y simu taneously, an incline bar secured to thewindow- MELVIN GABA' sash and inolosing said block, and a station-Witnesses ary toothed bar fixed to the Window-frame R. J. MoCARTY, andadapted to engage with the teeth on the C. M. THEOBOLD.

